A.When dead in the water,it is often difficult to find the neutral position and slight headway or sternway may result
B.When going directly from full ahead to full astern,there is complete steering control
C.When the vessel has headway and the propeller is in neutral,there is no effect on rudder control
D.When maneuvering in port,full ahead or astern power can usually be obtained without changing shaft RPM
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A.annular blowout preventer
B.annulus
C.accumulator
D.automatic choke
A.flame arrestor
B.flame screen
C.detonation arrestor
D.detonation blocker
A.slipway
B.graving dock
C.ground warp
D.caisson dock
A.a 2-second blast every 20 seconds
B.a 4-second blast every 20 seconds
C.an 8-second blast every 30 seconds
D.a 10-second blast every 30 seconds
A.turn off all lights that interfere with the navigation lights
B.turn on all available working lights on deck
C.ring the bell rapidly for five seconds once a minute
D.display two black diamonds in a vertical line during the day
A.Aye Aye Sir
B.Right 15 degrees rudder
C.Rudder is right 15 degrees
D.No reply is necessary,just carry out the order
A.heavy-walled drill pipe
B.tool joint
C.down hole tool
D.drill collar
A.main brace
B.tow span
C.jockey bar
D.None of the above
A.one sidelight
B.one sidelight and a masthead light
C.one sidelight and two masthead lights
D.both sidelights of a vessel and her masthead light(s)
A.vernier
B.psychrometer
C.hygrometer
D.stadimeter
最新试题
A jack-up drilling rig being towed must().
A large valve,usually installed above the ram preventers,that forms a seal in the annular space between the pipe and wellbore or,if no pipe is present,on the wellbore itself is called the().
Permanent magnetism is caused by().
It is not necessary to declare()in MARITIME HEALTH DECLARATION.
Cargo transfer operations on a tank vessel need NOT be stopped when().
A frame with two,or sometimes four,arms through which are threaded the guidelines and which is used to keep the drill stem and bit in line with the center opening in the temporary guide base is the().
A safe fuel system must().
A large vessel is equipped with a controllable pitch propeller. Which statement is TRUE?()
Between 1830 hrs and 1850 hrs this day,strong gusty winds()by my vessel,in consequence of which the vessel’s four mooring lines were broken.
A heavy steel curved arch constructed athwartships and above the after deck on a towing vessel is sometimes called a().